Subject: time compression
The package of Unix software from the Computer Audio Research Laboratory
(CARL) at Univerisity of California, San Diego includes an implementation of
the phase vocoder, which can do time compression and expansion. I'm not
sure exactly who to contact these days, but calling the UCSD Music Dept.
would probably lead in the right direction. Alternatively, you might
contact the International Computer Music Association, which has recently
started up an Internet-accessible library of computer music software.
They're based in San Francisco.